Electromagnets and Magnetic Fields

Magnets contain two:

• Metals

• Directions

• Forces

• Poles

True or False: Magnets can interact without touching

• True

• False

Electromagnets are:

• Always magnetic

• Only magnetic when an electric current flows through

• Made from two magnets

• Useless

Select all the ways you can make an electromagnet stronger

• Wrap more coils of wire around an iron nail

• Increase the current through the wire

• Use a bigger nail

• Use a magnet instead of a nail

Which magnetic pole does a compass point to?

• Magnetic north

• Magnetic south

Magnetic field lines run from:

• South to North

• East to West

• West to East

• North to South

Name a use for electromagnets

What are the 'wraps' of wire around an iron nail called?

True or False: Unlike poles repel

• True

• False

Which of these things will you NOT need to carry out an experiment to test the strength of an electromagnet?

• Battery

• Iron nail

• Paperclips

• Compass